Please make small corrections requested

1)Page 11, Line 12-23. This paragraph need to be rewrote. The first sentence should be reorganize as “….. arises from 1) …., 2)…., and 3)….”. Explanations of these items should start with a new sentence, or put in parentheses.

2)Section 6 – Discussion: A section of discussion should link all the other results discussed above and discuss further on the potential impact or implications. Here the authors interpreted more on monthly averaged results, but didn’t go to in-depth discussions. The section title should be changed or the authors move this section to the beginning of Section 3, i.e. shows the monthly averaged results and then discuss cases in details.

3)Section 7 – Conclusions. This section should be more condensed and concise, with only key findings and conclusions but not a repeat of the previous discussions

4)“lower/ upper tropospheric ozone” should be “lower-tropospheric ozone” or “upper-tropospheric ozone”, otherwise, it can also be misunderstood as "lower tropospheric-ozone".